Sources

found: Lewis, Margaret. Edith Pargeter, Ellis Peters, 1994:t.p. (Edith Pargeter, Ellis Peters) p. 7 etc. (readers of Edith Pargeter have come to her books through a pseudonym, Ellis Peters; half her work published under her own name, Edith Pargeter; some early novels re-issued as by Ellis Peters; other pseudonyms used include: Peter Benedict (Day star, 1937), Jolyon Carr (Murder in the dispensary, etc.), John Redfern (The victim needs a nurse, 1940))